Plan Then Build

Two-storey extension cost in East Midlands

East Midlands build costs run at 95% of the UK national average, across councils including Nottingham, Leicester, Derby. A 20m² example at mid-range spec: £70,640–£95,572. Adjust the size and spec below for your project.

Permitted Development & Cost Checker

England only. Takes about a minute.

Two-storey extension cost by size and spec in East Midlands

SizeBasicMid-rangePremium
15£36,792–£49,777£52,980–£71,679£75,873–£102,651
20£49,056–£66,369£70,640–£95,572£101,164–£136,868
30£73,583–£99,554£105,960–£143,358£151,745–£205,303

Does a two-storey extension need planning permission?

Council planning fees in East Midlands

Each council sets its own fees and decision times. See your council’s page for the exact figures.

Two-storey extension cost in other regions

Cost bands refreshed quarterly from published 2026 UK cost guides.